# 2012 United States Senate election in Massachusetts

Elections in Massachusetts :
General
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1970
1974
1978
1982
1986
1990
1994
1998
2002
2006
2008
2010
2012
2014
2016
2018
2020
2022 :
Federal government
U.S. President
1788–89
1792
1796
1800
1804
1808
1812
1816
1820
1824
1828
1832
1836
1840
1844
1848
1852
1856
1860
1864
1868
1872
1876
1880
1884
1888
1892
1896
1900
1904
1908
1912
1916
1920
1924
1928
1932
1936
1940
1944
1948
1952
1956
1960
1964
1968
1972
1976
1980
Dem
1984
1988
1992
1996
2000
Dem
2004
Dem
GOP
2008
Dem
GOP
2012
2016
Dem
GOP
2020
Dem
GOP
2024
Dem
GOP
U.S. Senate
Class 1: 1788
1790
1796 (S)
1796
1798
1800 (S)
1803
1808 (S)
1810 (S)
1811
1813 (S)
1815
1815 (S)
1816 (S)
1818 (S)
1820
1820 (S)
1822
1826
1827
1829 (S)
1833
1839
February 1841 (S)
1845
1851
1851 (S)
1857
1863
1869
1874 (S)
1875
1881
1887
1893
1899
1905
1911
1916
1922
1928
1934
1940
1946
1952
1958
1962 (S)
1964
1970
1976
1982
1988
1994
2000
2006
2010 (S)
2012
2018
2024
Class 2: 1788
1793
1796
1800 (S)
1803 (S)
1805
1810
1811 (S)
1816
1822 (S)
1826 (S)
1828
1835
January 1841 (S)
1841
1845 (S)
1847
1853
1855 (S)
1859
1865
1871
1873 (S)
1877
1883
1889
1895
1901
1905 (S)
1907
1913
1918
1924
1930
1936
1942
1944 (S)
1948
1954
1960
1966
1972
1978
1984
1990
1996
2002
2008
2013 (S)
2014
2020
U.S. House
1788/1789
1790/1792
1792/1793
1794/1795
1796/1797
1798/1799
1800/1801
1802/1803
1804
1806
1808
1810/1811
1812/1813
1814/1815
3rd
1816/1817
1818/1819
1820/1821
1822/1823
1824/1825
1826/1827
1828
1830/1832
1833/1834
1834/1835
1836
1838/1839
1840/1841
1842/1844
1844/1846
1846
1848/1850
1850/1851
1852
1854
1856
1858
1860
1862
1864
1866
1868
1870
1872
1874
1876
1878
1880
1882
1884
1886
1888
1890
1892
1894
1896
1898
1900
1902
1904
1906
1908
1910
1912
1914
1916
1918
1920
1922
1924
1926
1928
1930
1932
1934
1936
1938
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1991 (1st)
1992
1994
1996
1998
2000
2001 (9th)
2002
2004
2006
2007 (5th)
2008
2010
2012
2013 (5th)
2014
2016
2018
2020
2022
2024 :
State government
Governor
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
Apr. 1831
Nov. 1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1922
1924
1926
1928
1930
1932
1934
1936
1938
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1970
1974
1978
1982
1986
1990
1994
1998
2002
2006
2010
2014
2018
2022
2026
State Senate
1787
1824
2004
2006
2008
2010
2012
2014
2016
2018
2020
2022
2024
State House
2006
2008
2010
2012
2014
2016
2020
2022
2024
Governor's Council
2006
2010
2014
2018
2022
2024
Ballot measures
1980: Proposition 2½
2002: English Language Education in Public Schools
2006: 2008
Greyhound Protection
Sensible Marijuana Policy
State Income Tax Repeal
2010: No Sales Tax for Alcohol
Sales Tax Relief
Comprehensive Permits and Regional Planning
2012: Right to Repair
Death with Dignity
Medical Marijuana
2014: Automatic Gas Tax Increase Repeal
Expansion of Bottle Deposits
Casino Repeal
Paid Sick Days
2016: Expand Slot Machine Gaming
Charter School Expansion
Farm Animal Confinement
Legalization, Regulation and Taxation of Marijuana
2018: Gender Identity Anti-Discrimination
2020: pending :
Boston
Mayor
1822
1823
1824
Apr 1825
Dec 1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844–45
Dec 1845
1846
1847
1848
1849
1850
1851
1852
1853–54
Dec 1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1897
1899
1901
1903
1905
1907
1910
1914
1917
1921
1925
1929
1933
1937
1941
1945
1949
1951
1955
1959
1963
1967
1971
1975
1979
1983
1987
1991
1993
1997
2001
2005
2009
2013
2017
2021
2025
City council
1977
1979
1981
1983
1985
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
2011
2013
2015
2017
2019
2021
2023 :
Springfield
Mayor
1953
1955
1957
1959
1961
1963
1965
1967
1969
1971
1973 (S)
1973
1975
1977
1979
1983
1981
1985
1987
1989 (S)
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
2011
2015
2019
2023 :
Worcester
Mayor
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
2011
2013
2015
2017
2019
2021
2023 :
Massachusetts portal :
vte :
The 2012 United States Senate election in Massachusetts was held in Massachusetts on November 6, 2012, Democrat Elizabeth Warren defeated incumbent Republican Senator Scott Brown. This election was held concurrently with the U.S. presidential election and elections to the U.S. Senate in other states, as well as elections to the House of Representatives and various state and local elections.
Brown ran for re-election to a first full term. He had been elected in a special election in 2010 following the death of incumbent Democratic senator Ted Kennedy. Brown was unopposed in the Republican primary. For the Democrats, an initial wide field of prospective candidates narrowed after the entry of Harvard Law School professor Elizabeth Warren, the architect of the Consumer Financial Protection Bureau. Warren clinched near-unanimous party support, with all but one of the other Democratic candidates withdrawing following her entrance. After winning her party's nomination, she faced Brown in the general election.
The election was one of the most-followed races in 2012 and cost approximately $82 million, which made it the most expensive election in Massachusetts history and the second-most expensive in the entire 2012 election cycle, next to the presidential race; this was despite the two candidates' having agreed not to allow outside money to influence the race. Opinion polling indicated a close race for much of the campaign, though Warren opened up a small but consistent lead in the final few weeks. She went on to defeat Brown by over 236,000 votes, 54% to 46%. Despite his loss, Brown received 8.6% more of the state vote than Republican former governor of Massachusetts Mitt Romney did in the concurrent presidential election. Brown was the only incumbent senator to lose a general election in 2012. He later moved to New Hampshire where he ran for U.S. Senate and lost in 2014.

## Background

Democratic U.S. Senator Ted Kennedy was re-elected in 2006, and died on August 25, 2009, from a malignant brain tumor. On September 24, 2009, Massachusetts Governor Deval Patrick appointed longtime friend of Kennedy and former Democratic National Committee chairman Paul G. Kirk to succeed Kennedy until a special election could be held. Kirk's appointment was especially controversial, as the governor's ability to appoint an interim senator was removed during the Romney administration by the Democratic-controlled legislature, as a precaution if senator and presidential nominee John Kerry was elected president in 2004. Laws surrounding Senate appointment were quickly changed following Kennedy's death. The Massachusetts Republican Party sued in an attempt to halt Kirk's appointment, but it was rejected by Suffolk Superior Court Judge Thomas Connolly.
In the special election held on January 19, 2010, Republican state senator Scott Brown defeated Democratic state attorney general Martha Coakley in an upset victory. Brown thus became the first Republican to be elected from Massachusetts to the United States Senate since Edward Brooke in 1972, and he began serving the remainder of Kennedy's term on February 4, 2010.

## Republican primary

The National Republican Trust PAC, a group integral to Brown's 2010 election, vowed to draft a conservative opponent, citing dissatisfaction with his vote in support of the New START nuclear arms treaty. However, Brown went unopposed in the Republican primary.

### Candidates

* Scott Brown, incumbent U.S. Senator

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown | More conservative challenger | Other | Undecided |
| Public Policy Polling | September 16–18, 2011 | 255 | ±6.1% | 70% | 21% | — | 9% |

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Scott Brown (incumbent) | 133,860 | 99.46 |
| | Republican | Write-ins | 733 | 0.54 |
| Total votes | Total votes | Total votes | 134,593 | 100.00 |

## Democratic primary

The Massachusetts Democratic Convention was held on June 2, 2012, where Warren received 95.77% of delegate votes. As the only candidate with 15% of delegate votes necessary to qualify for the primary ballot, Warren eliminated her challenger Marisa DeFranco, becoming the de facto nominee. The Democratic primary was held on September 6, 2012, with Warren running unopposed.

### Candidates
#### Declared

* Nominee: Elizabeth Warren, Harvard Law School professor and architect of the Consumer Financial Protection Bureau
* Eliminated at convention: Marisa DeFranco, immigration lawyer who ran an "unabashedly liberal" campaign

#### Withdrew

* Tom Conroy, state representative (withdrew December 12, 2011)
* Alan Khazei, founder of City Year (withdrew October 26, 2011)
* James Coyne King, corporate lawyer (withdrew March 21, 2012)
* Bob Massie, entrepreneur and nominee for Lieutenant Governor of Massachusetts in 1994 (withdrew October 7, 2011)
* Herb Robinson, engineer (withdrew December 15, 2011)
* Setti Warren, mayor of Newton (withdrew September 29, 2011; endorsed E. Warren, no relation)

#### Declined

* Mike Capuano, U.S. Representative
* Kim Driscoll, mayor of Salem
* Barney Frank, U.S. Representative
* Joseph P. Kennedy II, former U.S. Representative
* Victoria Reggie Kennedy, Ted Kennedy's widow
* Stephen Lynch, U.S. Representative
* Rachel Maddow, television host and political commentator
* Marty Meehan, former U.S. Representative
* Thomas Menino, mayor of Boston
* Deval Patrick, Governor of Massachusetts
* John F. Tierney, U.S. Representative
* Warren Tolman, former state senator and former state representative

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Tom Conroy | Marisa DeFranco | Jim King | Alan Khazei | Bob Massie | Herb Robinson | Elizabeth Warren | Setti Warren | Other | Undecided |
| Public Policy Polling | September 16–18, 2011 | 461 | ±4.6% | 7% | 2% | — | 9% | 2% | 1% | 55% | 1% | — | 22% |
| UMass Lowell | September 22–28, 2011 | 1,005 | ±3.8% | 5% | 4% | — | 3% | 3% | 1% | 36% | 3% | 1% | 32% |
| YouGov for UMass Amherst | November 9–22, 2011 | 122 | ±4.6% | 7% | 6% | — | — | — | 2% | 73% | — | 13% | — |
| Suffolk University/7NEWS | February 11–15, 2012 | 218 | ±?% | — | 5% | 1% | — | — | — | 72% | — | — | 20% |
| Suffolk University/7NEWS | May 20–22, 2012 | 284 | ±?% | — | 6% | — | — | — | — | 71% | — | — | 12% |

### Results

Democratic convention vote :
| Party | Party | Candidate | Votes | % |
| | Democratic | Elizabeth Warren | 3,352 | 95.77 |
| | Democratic | Marisa DeFranco | 148 | 4.23 |
| Total votes | Total votes | Total votes | 3,500 | 100.00 |
Democratic primary vote :
| Party | Party | Candidate | Votes | % |
| | Democratic | Elizabeth Warren | 308,979 | 97.59 |
| | Democratic | Write-ins | 7,638 | 2.41 |
| Total votes | Total votes | Total votes | 316,617 | 100.00 |

## General election
### Campaign

On September 14, 2011, Warren declared her intention to run for the Democratic nomination for the 2012 election in Massachusetts for the United States Senate. The seat had been won by Republican Scott Brown in a 2010 special election after the death of Ted Kennedy.
Warren won the Democratic nomination on June 2, 2012, at the state Democratic convention with a record 95.77% of the votes of delegates. She was endorsed by the Governor of Massachusetts, Deval Patrick. Warren and her opponent Scott Brown agreed to engage in four televised debates, including one with a consortium of media outlets in Springfield and one on WBZ-TV in Boston.
Brown ran as a moderate, stressing his ability to cross party lines and highlighting his votes for the Dodd-Frank financial reform law and to repeal "don't ask, don't tell". Warren campaigned on a platform championing the middle class, and supporting Wall Street regulation. Warren criticized Brown for continually voting with Republican leadership, and argued that he was not the bipartisan moderate he claimed to be. A staple of Brown's attack tactics against Warren was his consistent reference to her as "Professor Warren", in attempt to portray her as an elitist academic. Brown faced blowback after the second debate, during which he claimed conservative Antonin Scalia was a "model" Supreme Court Justice, prompting boos from the debate audience.
Warren spoke at the 2012 Democratic National Convention immediately before Bill Clinton on the penultimate night of the convention. Warren contrasted President Obama's economic plan with Mitt Romney's in the 2012 election and rebuked the Republican Party's economic policy stating: "Their vision is clear: 'I've got mine, and the rest of you are on your own.'" Warren positioned herself as a champion of a beleaguered middle class that, as she said, "has been chipped, squeezed and hammered." According to Warren, "People feel like the system is rigged against them. And here's the painful part: They're right. The system is rigged." Warren said that Wall Street CEOs "wrecked our economy and destroyed millions of jobs" and that they "still strut around congress, no shame, demanding favors, and acting like we should thank them." Brown attended the 2012 Republican National Convention, but was not a speaker there. According to Brown, he had rejected an offer to play a larger role, and limited his attendance to a single day because of scheduling demands.
Following Todd Akin's controversial "legitimate rape" comments, Brown was the first sitting senator to demand he drop out of the Missouri U.S. Senate race. He also called on his party to "recognize in its platform that you can be pro-choice and still be a good Republican." Brown's campaign had been endorsed by many Massachusetts Democrats, many of whom were prominently featured in his campaign ads.
In September 2011, a video of Warren explaining her approach to economic policy gained popularity on the internet. In the video, Warren rebuts the charge that asking the rich to pay more taxes is "class warfare", pointing out that no one grew rich in America without depending on infrastructure paid for by the rest of society, stating:
   There is nobody in this country who got rich on his own. Nobody. ... You moved your goods to market on the roads the rest of us paid for; you hired workers the rest of us paid to educate; you were safe in your factory because of police forces and fire forces that the rest of us paid for. You didn't have to worry that marauding bands would come and seize everything at your factory, and hire someone to protect against this, because of the work the rest of us did. Now look, you built a factory and it turned into something terrific, or a great idea. God bless. Keep a big hunk of it. But part of the underlying social contract is, you take a hunk of that and pay forward for the next kid who comes along.
On July 13, 2012, President Obama sparked a controversy when he echoed her thoughts in a campaign speech saying, "Somebody helped to create this unbelievable American system that we have that allowed you to thrive. Somebody invested in roads and bridges. If you've got a business—you didn't build that. Somebody else made that happen."
Warren encountered significant opposition from business interests. In August 2012, Rob Engstrom, political director for the United States Chamber of Commerce, claimed that "no other candidate in 2012 represents a greater threat to free enterprise than Professor Warren." She nonetheless raised $39 million for her campaign, the most of any Senate candidate in 2012.

#### Native American ancestry controversy

In April 2012, the Boston Herald sparked an election controversy when it drew attention to Warren's Association of American Law Schools (AALS) directory entries from 1986 to 1995, which listed her as a minority professor. According to the AALS, the directory was compiled by information supplied by law school deans, based on questionnaires filled out by individual teachers. Warren stated that she had self-identified as having Native American ancestry in order to meet others with a similar background. Harvard Law School had listed her as a minority professor in response to criticisms about a lack of faculty diversity, but Warren said that she was unaware of this until she read about it in a newspaper during the 2012 election.
Her opponent Scott Brown speculated that she had fabricated a native ancestry to gain an advantage in the employment market; the Brown campaign used Warren's lineage in several attack ads. In response, Warren's brothers issued a joint statement stating that they "grew up listening to our mother and grandmother and other relatives talk about our family's Cherokee and Delaware heritage". Brian Leiter of the Chicago Law School dismissed the allegations against Warren, noting that law schools have "no pressure to hire Native Americans for affirmative action reasons", and that Warren's record of scholarship was "clearly sufficient to get her appointed at Harvard". Several Brown staffers mocked Warren by doing the "tomahawk chop" at a Brown campaign rally, which Brown said he did not condone.
According to the New England Historical Genealogical Society, several members of Warren's maternal family claim Cherokee heritage; the society found a family newsletter that alluded to a marriage license application that listed Elizabeth Warren's great-great-great-grandmother as a Cherokee, but could not find the primary document and found no proof of Warren's Native American heritage. Some members of the Cherokee Nation protested her claim to Native American ancestry and questioned whether she benefitted from it. Former colleagues and supervisors at the universities where she had worked (including Charles Fried, former Solicitor General under President Ronald Reagan) said Warren's ancestry was either not mentioned, or played no role in her hiring.
The question of Warren's ancestry was pressed by the Brown campaign throughout the election. However, polls showed that most voters said that the controversy would not impact their vote in the election. Warren's 2014 autobiography devoted a section to the allegations, describing them as untrue and hurtful. In 2018, Warren released the results of a DNA test that strongly suggests that she had a Native American ancestor six to ten generations ago, and suggests Warren is between 1/64th and 1/1,024th Native American.

### Endorsements

Politicians
* Bob Ambler, Democratic former state representative
* Robert A. Antonioni, Democratic former state senator
* Kelly Ayotte, U.S. Senator (R-NH)
* Michael Bloomberg, mayor of New York City
* Arthur Broadhurst, Democratic former state representative
* Paul C. Casey, Democratic former state representative
* Paul Cellucci, former governor of Massachusetts and U.S. Ambassador to Canada
* Chris Christie, Governor of New Jersey
* Susan Collins, U.S. Senator (R-ME)
* Robert Durand, Democratic former state representative
* Lewis Evangelidis, Worcester County Sheriff
* Christopher Fallon, Democratic State Representative, 33rd Middlesex District
* Kimberly Ferguson, State Representative, 1st Worcester District
* Raymond Flynn, former mayor of Boston and U.S. Ambassador to the Holy See
* Larry Giordano, Democratic former state representative
* Rudy Giuliani, former mayor of New York City
* Geoff Hall, Democratic former state representative
* Bradley Jones, Jr., Minority Leader of the Massachusetts House of Representatives
* Judith Flanagan Kennedy, mayor of Lynn
* Michael Knapik, State Senator, 2nd Hampden and Hampshire District
* Richard Lugar, U.S. Senator (R-IN)
* Konstantina Lukes, Democratic City Councilor and former mayor of Worcester
* John McCain, U.S. Senator (R-AZ)
* David Nangle, Democratic State Representative, 17th Middlesex District
* Shaunna O'Connell, State Representative, 3rd Bristol District
* Keiko Orrall, State Representative, 12th Bristol District
* Marie Parente, Democratic former state representative
* Karyn Polito, former state representative
* Marco Rubio, U.S. Senator (R-FL)
* Charles Ryan, Democratic former mayor of Springfield
* Olympia Snowe, U.S. Senator (R-ME)
* Philip Travis, Democratic former state representative
* Anthony Verga, Democratic former state representative
* William Weld, former Governor of Massachusetts
* Christine Todd Whitman, former Governor of New Jersey
* Donald Wong, State Representative, 9th Essex District
Labor unions
* Boston Police Superior Officers Federation
* MBTA Police Patrolmen's Association
* MBTA Police Sergeants Association
* State Police Association of Massachusetts
Military
* Thomas J. Hudner, Jr., Medal of Honor recipient
* Thomas G. Kelley, Medal of Honor recipient and former Massachusetts Secretary of Veterans' Services
Newspapers
* Boston Herald
* Cape Cod Times
* The Daily Free Press
* The Eagle-Tribune
* The Enterprise
* Gloucester Daily Times
* Newburyport Daily News
* The Patriot Ledger
* The Salem News
* Sentinel & Enterprise
* The Sun
* Worcester Telegram & Gazette
Individuals
* Drew Bledsoe, retired New England Patriots player
* Lenny Clarke, comedian
* Bob Cousy, retired Boston Celtics player
* Dave Cowens, retired Boston Celtics player
* Steve DeOssie, retired New England Patriots player
* Steve Grogan, retired New England Patriots player
* Wendy Murphy, newspaper columnist and co-host on WRKO talk radio
* Fred Smerlas, retired New England Patriots player
* JoJo White, retired Boston Celtics player
Organizations
* ConservAmerica
* GOProud
* Humane Society Legislative Fund
* Log Cabin Republicans
* Massachusetts Citizens for Life
* National Federation of Independent Business
* Republican Majority for Choice
* United States Chamber of Commerce
Rescinded
* Micky Ward, boxer
Politicians
* Sheila Bair, Republican former Chair of the Federal Deposit Insurance Corporation
* Bill Bradley, former U.S. Senator (D-NJ)
* Gary Christenson, mayor of Malden
* Max Cleland, former U.S. Senator (D-GA)
* Bill Clinton, former president of the United States
* Tom Conroy, State Representative, 13th Middlesex District
* Joseph Curtatone, mayor of Somerville
* Howard Dean, 2004 Presidential Candidate and former governor of Vermont and Chairman of the DNC
* Rosa DeLauro, member of the U.S. House of Representatives from Connecticut
* Robert DeLeo, Speaker of the Massachusetts House of Representatives, 19th Suffolk District
* Michael Dukakis, former governor of Massachusetts
* Russ Feingold, former U.S. Senator (D-WI)
* Barney Frank, member of the U.S. House of Representatives from Massachusetts
* Al Franken, U.S. Senator (D-MN)
* Kamala Harris, Attorney General of California
* Patrick J. Kennedy, former U.S. Representative from Rhode Island and son of Ted Kennedy
* John Kerry, U.S. Senator (D-MA)
* Alan Khazei, social entrepreneur
* John Lewis, member of the U.S. House of Representatives from Georgia
* Raymond Mariano, former mayor of Worcester
* Michael J. McGlynn, mayor of Medford
* Jim McGovern, member of the U.S. House of Representatives from Massachusetts
* Thomas Menino, mayor of Boston
* Barbara Mikulski, U.S. Senator (D-MD)
* Alex Morse, mayor of Holyoke
* Patrick O. Murphy, mayor of Lowell
* Therese Murray, President of the Massachusetts Senate, Plymouth and Barnstable District
* Tim Murray, lieutenant governor of Massachusetts
* Richard Neal, member of the U.S. House of Representatives from Massachusetts
* Barack Obama, president of the United States
* Joseph C. O'Brien, former mayor of Worcester
* John Olver, member of the U.S. House of Representatives from Massachusetts
* Deval Patrick, governor of Massachusetts
* Joseph Petty, mayor of Worcester
* Sharon Pollard, former mayor of Methuen
* Ayanna Pressley, member of the Boston City Council
* Stan Rosenberg, President Pro Tempore of the Massachusetts Senate, Hampshire and Franklin District
* Bernie Sanders, U.S. Senator (I-VT)
* John Scibak, State Representative, 2nd Hampshire District
* Kathleen Sebelius, U.S. Secretary of Health and Human Services and former governor of Kansas
* Jeanne Shaheen, U.S. Senator (D-NH)
* Ellen Story, State Representative, 3rd Hampshire District
* Niki Tsongas, member of the U.S. House of Representatives from Massachusetts
* Setti Warren, mayor of Newton
Labor unions
* Massachusetts AFL–CIO
* Massachusetts Nurses Association
* Massachusetts Service Employees International Union
* National Education Association
* United Auto Workers
Newspapers
* The Berkshire Eagle
* The Boston Globe
* The Harvard Crimson
* The MetroWest Daily News
* The Republican
* The Standard-Times
* The Sun Chronicle
Individuals
* Ben Affleck, actor
* Archbishop Timothy Paul Baymon, president of the Council of Churches of Greater Springfield
* Cher, singer and actress
* Sandra Fluke, women's rights activist
* Jennifer Garner, actress
* Caroline Kennedy, daughter of John F. Kennedy
* Edward M. Kennedy, Jr., investment banker and son of Ted Kennedy
* Joseph P. Kennedy III, candidate for the U.S. House of Representatives from Massachusetts
* Bob Massie, priest, author, and social activist
* Reverend Eugene Rivers, co-founder of the Boston TenPoint Coalition
* Bruce Springsteen, singer
* James Taylor, singer
Organizations
* Clean Water Action
* Council for a Livable World
* Democracy for America
* EMILY's List
* Human Rights Campaign
* Massachusetts Democratic Party
* NARAL Pro-Choice America
* National Organization for Women
* Planned Parenthood
* Progressive Democrats of America
* Sierra Club
* Young Democrats of America

### Debates

Both candidates agreed to four televised debates, three of which were held. The candidates agreed to a fourth debate which was to be held on October 30 in WGBH-TV's studio, hosted by a Boston media consortium, and moderated by John King, but the day before both pulled out due to Hurricane Sandy. Victoria Kennedy, widow of Ted Kennedy, had proposed an additional debate with Tom Brokaw as moderator, but Brown would only accept the invitation if she pledged not to endorse Brown's opponent, which she refused.
Debate 1: September 20 at WBZ-TV studio, hosted by WBZ and WBZ Newsradio 1030. Moderated by the station's political reporter Jon Keller.
* Complete video of debate – C-SPAN
Debate 2: October 1 at UMass Lowell, co-hosted by UMass and the Boston Herald. Moderated by David Gregory.
* Complete video of debate – C-SPAN
Debate 3: October 10 at Springfield Symphony Hall, hosted by a Western Massachusetts consortium. Moderated by WGBY-TV's Jim Madigan.
* Complete video of debate – C-SPAN

### Fundraising

The election cost approximately $82 million, making it the most expensive election in Massachusetts' history and of any Congressional race in history up to that point, as well as the second-most expensive election in the 2012 election cycle, behind only the 2012 presidential election.

#### The People's Pledge

Both Warren and Brown stated early in the race that they would not accept television advertisement assistance from Super PACs and interest groups. On January 23, 2012, both candidates signed the agreement, or People's Pledge. While no outside groups were obligated by the agreement, both candidates agreed to donate a sum equal to 50% of an advertisement run by any groups to a charity of the other candidate's choice. The pledge was broken twice, by Brown supporters. In March the American Petroleum Institute and Coalition of Americans for Political Equality launched ads supporting Brown, and as a result, the Brown campaign agreed to make donations of $1,000 and $34,545, respectively, to the charity of Warren's choice: the Autism Consortium.

#### Top donors

Contributions by affiliation Source: OpenSecrets 2012
| Scott Brown | Scott Brown | Elizabeth Warren | Elizabeth Warren |
| Contributor | Contribution | Contributor | Contribution |
| Fidelity Investments | $289,455 | EMILY's List | $507,095 |
| EMC Corporation | $169,800 | Moveon.org | $448,517 |
| Goldman Sachs | $119,400 | Harvard University | $304,050 |
| VoteSane PAC | $113,250 | MIT | $77,200 |
| State Street Corp | $106,650 | Boston University | $73,700 |
| MassMutual | $106,198 | Brown Rudnick LLP | $68,077 |
| Raytheon | $89,350 | University of California | $63,600 |
| Liberty Mutual | $85,500 | League of Conservation Voters | $54,551 |
| JPMorgan Chase | $80,855 | Ropes & Gray | $52,950 |
| PricewaterhouseCoopers | $79,800 | Thornton & Naumes | $44,450 |
Contributions by industry Source: OpenSecrets 2012
| Scott Brown | Scott Brown | Elizabeth Warren | Elizabeth Warren |
| Industry | Contribution | Industry | Contribution |
| Retired | $3,574,088 | Retired | $3,374,569 |
| Securities & Investment | $3,370,618 | Lawyers/Law Firms | $2,196,972 |
| Lawyers/Law Firms | $1,332,582 | Women's Issues | $1,588,383 |
| Real Estate | $1,192,258 | Education | $1,335,058 |
| Insurance | $914,504 | Democratic/Liberal | $1,253,375 |
| Health Professionals | $877,878 | Securities & Investment | $534,275 |
| Misc Finance | $828,501 | TV/Movies/Music | $476,814 |
| Business Services | $661,647 | Health Professionals | $456,006 |
| Computer industry/Internet | $637,825 | Business Services | $455,291 |
| Republican/Conservative | $616,158 | Printing & Publishing | $387,031 |

### Predictions

| Source | Ranking | As of |
| The Cook Political Report | Tossup | November 1, 2012 |
| Sabato's Crystal Ball | Lean D (flip) | November 5, 2012 |
| Rothenberg Political Report | Tilt D (flip) | November 2, 2012 |
| Real Clear Politics | Tossup | November 5, 2012 |

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Elizabeth Warren (D) | Other | Undecided |
| W. New England U. | March 6–10, 2011 | 472 RV | ±4.5% | 51% | 34% | — | 14% |
| Public Policy Polling | June 2–5, 2011 | 957 RV | ±3.2% | 47% | 32% | — | 21% |
| WBUR MassInc | August 30 – September 1, 2011 | 500 | ±4.4% | 44% | 35% | 2% | 19% |
| Public Policy Polling | September 16–18, 2011 | 957 RV | ±3.2% | 44% | 46% | — | 10% |
| UMass Lowell | September 22–28, 2011 | 1,005 RV | ±3.8% | 41% | 38% | 3% | 14% |
| W. New England U. | September 29 – October 5, 2011 | 475 RV | ±4.5% | 47% | 42% | — | 10% |
| YouGov for UMass Amherst | November 9–22, 2011 | 433 RV | ±4.4% | 39% | 43% | 4% | 14% |
| UMass Lowell /Boston Herald | December 1–6, 2011 | 505 RV | ±5.3% | 42% | 49% | 3% | 6% |
| Opinion Dynamics for Mass Insight | January 31 – February 4, 2012 | 456 RV | ±4.6% | 52% | 42% | — | 6% |
| MassINC for WBUR | February 6–9, 2012 | 505 LV | ±4.4% | 43% | 46% | 1% | 11% |
| Suffolk/WHDH | February 11–15, 2012 | 600 LV | ±4% | 49% | 40% | 2% | 9% |
| Rasmussen Reports | February 29, 2012 | 500 LV | ±4.5% | 49% | 44% | 2% | 5% |
| W. New England U. | February 23 – March 1, 2012 | 527 RV | ±4.3% | 49% | 41% | — | 10% |
| Public Policy Polling | March 16–18, 2012 | 936 RV | ±3.2% | 41% | 46% | — | 13% |
| Boston Globe | March 21–27, 2012 | 544 LV | ±4.2% | 37% | 35% | — | 26% |
| Rasmussen Reports | April 9, 2012 | 500 LV | ±4.5% | 45% | 46% | 1% | 8% |
| MassINC for MassLive | April 25–28, 2012 | 438 LV | ±4.7% | 41% | 43% | 1% | 12% |
| Rasmussen Reports | May 7, 2012 | 500 LV | ±4.5% | 45% | 45% | 2% | 8% |
| Suffolk/WHDH | May 20–22, 2012 | 600 LV | ±4% | 48% | 47% | — | 5% |
| Boston Globe | May 25–31, 2012 | 651 LV | ±3.8% | 39% | 37% | 2% | 23% |
| W. New England U. | May 29–31, 2012 | 504 RV | ±4.4% | 43% | 45% | — | 11% |
| Public Policy Polling | June 22–24, 2012 | 902 RV | ±3.3% | 46% | 46% | — | 8% |
| MassINC | July 19–22, 2012 | 445 RV | ±4.4% | 38% | 40% | — | 16% |
| Public Policy Polling | August 16–19, 2012 | 1,115 LV | ±4.4% | 49% | 44% | — | 8% |
| Kimball Political Consulting | August 21, 2012 | 1,500 RV | ±4% | 49% | 43% | — | 9% |
| Kimball Political Consulting | September 7–9, 2012 | 756 LV | ±3.5% | 46% | 45% | — | 9% |
| W. New England U. | September 6–13, 2012 | 444 LV | ±4.6% | 44% | 50% | — | 6% |
| Public Policy Polling | September 13–16, 2012 | 876 LV | ±3.3% | 46% | 48% | — | 6% |
| Suffolk/WHDH | September 13–16, 2012 | 600 LV | ±4% | 44% | 48% | — | 8% |
| UMass Lowell /Boston Herald | September 13–17, 2012 | 497 LV | ±4% | 49% | 45% | 1% | 4% |
| MassINC for WBUR | September 15–17, 2012 | 507 LV | ±4.4% | 40% | 45% | 2% | 12% |
| Kimball Political Consulting | September 20, 2012 | 868 LV | ±3.25% | 48% | 47% | 1% | 3% |
| UMass Lowell /Boston Herald | September 20, 2012 | 524 RV | ±5.3% | 50% | 44% | 1% | 5% |
| Rasmussen Reports | September 24, 2012 | 500 LV | ±4.5% | 48% | 48% | — | 5% |
| Boston Globe | September 21–27, 2012 | 502 LV | ±4.4% | 38% | 43% | 1% | 18% |
| WBUR | September 26–28, 2012 | 504 LV | ±4.4% | 45% | 49% | 1% | 6% |
| Opinion Dynamics for Mass Insight | September 25–30, 2012 | 329 LV | ±5.4% | 44% | 48% | — | 8% |
| W. New England U. | September 28 – October 4, 2012 | 440 LV | ±4.3% | 45% | 50% | — | 5% |
| MassINC for WBUR | October 5–7, 2012 | 501 LV | ±4.4% | 48% | 45% | 1% | 8% |
| YouGov for UMass Amherst | October 2–8, 2012 | 436 LV | ±5.4% | 45% | 48% | — | 6% |
| Rasmussen Reports | October 10, 2012 | 500 LV | ±4.5% | 47% | 49% | — | 4% |
| YouGov | October 4–11, 2012 | 669 LV | ±4.9% | 39% | 46% | — | 15% |
| Public Policy Polling | October 9–11, 2012 | 1,051 LV | ±3% | 44% | 50% | — | 6% |
| Public Policy Polling for the LCV | October 15–16, 2012 | 709 LV | ±3.5% | 44% | 53% | — | — |
| Kimball Political Consulting | October 18–21, 2012 | 761 LV | ±3.5% | 45% | 48% | — | 7% |
| MassINC for WBUR | October 21–22, 2012 | 516 LV | ±4.4% | 44% | 50% | 1% | 4% |
| Rasmussen Reports | October 25, 2012 | 500 LV | ±4.5% | 47% | 52% | — | — |
| Boston Globe | October 24–28, 2012 | 583 LV | ±4.1% | 47% | 47% | — | 6% |
| Suffolk/WHDH | October 25–28, 2012 | 600 LV | ±4% | 46% | 53% | — | 1% |
| W. New England U. | October 26 – November 1, 2012 | 535 LV | ±4% | 46% | 50% | — | 4% |
| Public Policy Polling | November 1–2, 2012 | 1,089 LV | ±3% | 46% | 52% | — | 2% |
| UMass Lowell/Boston Herald | October 31 – November 3, 2012 | 800 LV | ±4.1% | 49% | 48% | 1% | 1% |
* RV= Registered voters; LV= Likely voters
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Mike Capuano (D) | Other | Undecided |
| Public Policy Polling | November 29 – December 1, 2010 | 500 | ±4.4% | 52% | 36% | — | 12% |
| Western N.E. College | March 6–10, 2011 | 472 | ±4.5% | 51% | 38% | — | 10% |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 52% | 26% | 1% | 21% |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 48% | 38% | — | 14% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Martha Coakley (D) | Other | Undecided |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 49% | 40% | — | 10% |
| UMass Lowell | September 22–28, 2011 | 1,005 | ±3.8% | 41% | 40% | 4% | 15% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Tom Conroy (D) | Other | Undecided |
| Public Policy Polling | September 16–18, 2011 | 957 | ±3.2% | 50% | 31% | — | 18% |
| UMass Lowell | September 22–28, 2011 | 499 | ±5.4% | 46% | 25% | 5% | 24% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Marisa DeFranco (D) | Other | Undecided |
| UMass Lowell | September 22–28, 2011 | 499 | ±5.4% | 48% | 22% | 4% | 26% |
| Suffolk/WHDH | February 11–15, 2012 | 600 | ±4% | 55% | 22% | 2% | 22% |
| Suffolk/WHDH | May 20–22, 2012 | 600 | ±4% | 49% | 28% | — | 24% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Alan Khazei (D) | Other | Undecided |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 50% | 31% | — | 19% |
| WBUR MassInc | August 30 – September 1, 2011 | 500 | ±4.4% | 45% | 30% | 2% | 22% |
| Public Policy Polling | September 16–18, 2011 | 957 | ±3.2% | 48% | 33% | — | 18% |
| UMass Lowell | September 22–28, 2011 | 506 | ±5.3% | 40% | 28% | 6% | 26% |
| Western N.E. College | September 29 – October 5, 2011 | 475 | ±4.5% | 52% | 35% | — | 13% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Joseph P. Kennedy II (D) | Other | Undecided |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 45% | 40% | — | 14% |
| UMass Lowell | September 22–28, 2011 | 499 | ±5.4% | 37% | 45% | 4% | 14% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Vicki Kennedy (D) | Other | Undecided |
| Public Policy Polling | November 29 – December 1, 2010 | 500 | ±4.4% | 48% | 41% | — | 11% |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 52% | 30% | — | 18% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Jim King (D) | Other | Undecided |
| Suffolk/WHDH | February 11–15, 2012 | 600 | ±4% | 57% | 21% | 2% | 20% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Stephen Lynch (D) | Other | Undecided |
| Public Policy Polling | November 29 – December 1, 2010 | 500 | ±4.4% | 49% | 30% | — | 20% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Rachel Maddow (D) | Other | Undecided |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 49% | 29% | — | 21% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Ed Markey (D) | Other | Undecided |
| Public Policy Polling | November 29 – December 1, 2010 | 500 | ±4.4% | 49% | 39% | — | 13% |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 53% | 26% | — | 20% |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 47% | 37% | — | 16% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Bob Massie (D) | Other | Undecided |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 48% | 25% | — | 27% |
| WBUR MassInc | August 30 – September 1, 2011 | 500 | ±4.4% | 45% | 29% | 3% | 23% |
| Public Policy Polling | September 16–18, 2011 | 957 | ±3.2% | 49% | 31% | — | 21% |
| UMass Lowell | September 22–28, 2011 | 506 | ±5.4% | 43% | 27% | 5% | 26% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Tim Murray (D) | Other | Undecided |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 51% | 23% | 1% | 24% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Deval Patrick (D) | Other | Undecided |
| Public Policy Polling | November 29 – December 1, 2010 | 500 | ±4.4% | 49% | 42% | — | 9% |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 52% | 37% | — | 11% |
| UMass Lowell | September 22–28, 2011 | 506 | ±5.4% | 36% | 43% | 5% | 16% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Herb Robinson (D) | Other | Undecided |
| UMass Lowell | September 22–28, 2011 | 499 | ±5.4% | 51% | 18% | 5% | 25% |
| Poll source | Date(s) administered | Sample size | Margin of error | Scott Brown (R) | Setti Warren (D) | Other | Undecided |
| 7News/Suffolk University | April 3–5, 2011 | 500 | ±4.4% | 52% | 9% | 3% | 36% |
| Public Policy Polling | June 2–5, 2011 | 957 | ±3.2% | 48% | 23% | — | 29% |
| WBUR MassInc | August 30 – September 1, 2011 | 500 | ±4.4% | 46% | 28% | 3% | 24% |
| Public Policy Polling | September 16–18, 2011 | 957 | ±3.2% | 47% | 32% | — | 21% |
| UMass Lowell | September 22–28, 2011 | 506 | ±5.4% | 43% | 28% | 6% | 23% |

### Results

Despite the Obama campaign's easy victory in the state, and winning all of the state's counties, Warren significantly underperformed Obama's margin. As expected, Warren performed very well in Suffolk County, which is home to the state's largest city and its capital Boston. Brown performed well in the southern part of the state near Cape Cod. Warren made history by becoming the first Massachusetts woman elected to the U.S. Senate.
United States Senate election in Massachusetts, 2012 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Elizabeth Warren | 1,696,346 | 53.74 | +6.67 |
| | Republican | Scott Brown (incumbent) | 1,458,048 | 46.19 | −5.64 |
| | Write-in | Write-in | 2,159 | 0.07 | +0.02 |
| Total votes | Total votes | Total votes | 3,156,553 | 100.00 | N/A |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

#### Counties that flipped from Republican to Democratic

* Bristol (largest municipality: New Bedford)
* Hampden (largest municipality: Springfield)

#### By congressional district

Warren won 5 of 9 congressional districts, while Brown won 4, which all elected Democrats.
| District | Brown | Warren | Representative |
| 1st | 42.83% | 57.17% | John Olver (112th Congress) |
| 1st | 42.83% | 57.17% | Richard Neal (113th Congress) |
| 2nd | 48.55% | 51.45% | Richard Neal (112th Congress) |
| 2nd | 48.55% | 51.45% | Jim McGovern (113th Congress) |
| 3rd | 50.82% | 49.18% | Jim McGovern (112th Congress) |
| 3rd | 50.82% | 49.18% | Niki Tsongas (113th Congress) |
| 4th | 50.35% | 49.65% | Barney Frank (112th Congress) |
| 4th | 50.35% | 49.65% | Joe Kennedy III (113th Congress) |
| 5th | 41.22% | 58.78% | Niki Tsongas (112th Congress) |
| 5th | 41.22% | 58.78% | Ed Markey (113th Congress) |
| 6th | 53.62% | 46.38% | John F. Tierney |
| 7th | 21.36% | 78.64% | Ed Markey (112th Congress) |
| 7th | 21.36% | 78.64% | Michael Capuano (113th Congress) |
| 8th | 49.90% | 50.10% | Michael Capuano (112th Congress) |
| 8th | 49.90% | 50.10% | Stephen Lynch (113th Congress) |
| 9th | 51.12% | 48.88% | Stephen Lynch (112th Congress) |
| 9th | 51.12% | 48.88% | Bill Keating (113th Congress) |

## Aftermath

The People's Pledge was a popular concept, which Common Cause proposed being implemented in other races. The pledge also resulted in fewer attack ads on the airwaves.
Less than two months after the election, President Barack Obama nominated Senator John Kerry to become United States Secretary of State. Kerry was sworn in on February 1, making newly inaugurated Warren the state's senior Senator, and the Senate's most-junior senior senator. In the special election to replace Kerry the following year, Democratic nominee Ed Markey asked his Republican rival Gabriel E. Gomez to sign a similar pledge with him, although Gomez refused.
The election was a critical event in both candidates' political careers, with Warren becoming a political icon after entering the Senate, and being drafted to run for president in 2016 and eventually running in 2020. After the election loss, Brown was considered the most prominent Republican in Massachusetts and heavily favored to run in the special Senate election the following year or for governor in 2014, though he declined to do either. He instead moved to New Hampshire and ran for the Senate there in 2014 against Democratic incumbent Jeanne Shaheen. He lost, 51% to 48%, becoming the first male candidate to lose two Senate races to female candidates.